package br.com.dwii.tpg2.servlet;

import br.com.dwii.tpg2.entidade.Usuario;
import java.io.IOException;
import java.sql.SQLException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 *
 * @author Diego
 */
public class LoginSrv extends HttpServlet {

    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        
        String url = "index.jsp";
        
        if ("true".equals(request.getParameter("logout"))) {
            request.getSession().setAttribute("UsuarioSession", null);
        } else {
            // Usuário
            Usuario usr = new Usuario();
            usr.setEmail(String.valueOf(request.getParameter("loginEmail")));
            usr.setSenha(String.valueOf(request.getParameter("loginSenha")));
            try {
                usr.login();
                // Se exucutou o método de login, mas não retornou um id, é porque não encontrou (email ou senha inválido)
                if (usr.getId() == null) {
                    url += "?loginFail=true";
                }
            } catch (SQLException ex) {
                Logger.getLogger(LoginSrv.class.getName()).log(Level.SEVERE, null, ex);
            }

            request.getSession().setAttribute("UsuarioSession", usr);
        }
        
        response.sendRedirect(url);
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
